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High severity7.5NVD Advisory· Published Feb 14, 2023· Updated Jun 17, 2026

CVE-2023-21691

CVE-2023-21691

Description

Microsoft Protected Extensible Authentication Protocol (PEAP) Information Disclosure Vulnerability

Affected products

51
  • Microsoft/Windows Server 2019 (Server Core installation)v5
    Range: 10.0.17763.0
  • Microsoft/Windows Server 2016 (Server Core installation)v5
    Range: 10.0.14393.0
  • Microsoft/Windows Server 2008 Service Pack 2 (Server Core installation)v5
    Range: 6.0.6003.0
  • Microsoft/Windows Server 2008 R2 Service Pack 1 (Server Core installation)v5
    Range: 6.1.7601.0
  • Microsoft/Windows Server 2012 (Server Core installation)v5
    Range: 6.2.9200.0
  • Microsoft/Windows Server 2012 R2 (Server Core installation)v5
    Range: 6.3.9600.0
  • Microsoft/Protected Extensible Authentication Protocol (PEAP)llm-fuzzy
  • Microsoft/Windows Server 2003cpe-rescue2 versions
    10.0.20348.0+ 1 more
    • (no CPE)range: 10.0.20348.0
    • cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*
  • Microsoft/Windows 10 1909cpe-rescue3 versions
    10.0.10240.0+ 2 more
    • (no CPE)range: 10.0.10240.0
    • cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:*range: <10.0.10240.19747
    • cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:*range: <10.0.10240.19747
  • Microsoft/Windows 11 23h2cpe-rescue3 versions
    10.0.22621.0+ 2 more
    • (no CPE)range: 10.0.22621.0
    • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:arm64:*range: <10.0.22621.1265
    • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:x64:*range: <10.0.22621.1265
  • Microsoft/Windows 10 1809cpe-rescue4 versions
    10.0.0+ 3 more
    • (no CPE)range: 10.0.0
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:arm64:*range: <10.0.17763.4010
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*range: <10.0.17763.4010
    • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*range: <10.0.17763.4010
  • Microsoft/Windows Server 2019cpe-rescue2 versions
    10.0.17763.0+ 1 more
    • (no CPE)range: 10.0.17763.0
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • Microsoft/Windows 11 21h2cpe-rescue3 versions
    10.0.0+ 2 more
    • (no CPE)range: 10.0.0
    • cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:arm64:*range: <10.0.22000.1574
    • cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:x64:*range: <10.0.22000.1574
  • Microsoft/Windows 10 1607cpe-rescue15 versions
    10.0.14393.0+ 14 more
    • (no CPE)range: 10.0.14393.0
    • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*range: <10.0.14393.5717
    • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*range: <10.0.14393.5717
    • cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:arm64:*range: <10.0.19042.2604
    • cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:x64:*range: <10.0.19042.2604
    • cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:x86:*range: <10.0.19042.2604
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*range: <10.0.19044.2604
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*range: <10.0.19044.2604
    • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*range: <10.0.19044.2604
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*range: <10.0.19045.2604
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*range: <10.0.19045.2604
    • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*range: <10.0.19045.2604
    • (no CPE)range: 10.0.19043.0
    • (no CPE)range: 10.0.0
    • (no CPE)range: 10.0.19045.0
  • Microsoft/Windows Server 2016cpe-rescue2 versions
    10.0.14393.0+ 1 more
    • (no CPE)range: 10.0.14393.0
    • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2008cpe-rescue6 versions
    6.0.6003.0+ 5 more
    • (no CPE)range: 6.0.6003.0
    • (no CPE)range: 6.0.6003.0
    • (no CPE)range: 6.1.7601.0
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
    • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
  • Microsoft/Windows Server 2012cpe-rescue4 versions
    6.2.9200.0+ 3 more
    • (no CPE)range: 6.2.9200.0
    • (no CPE)range: 6.3.9600.0
    • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

1

News mentions

0

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